DRIVING GEARING WITH BIDIRECTIONAL DRIVING ACTION OF A TWO-HAND MUSCLE-DRIVEN VEHICLE WITH GEARBOX

Abstract: The application relates to a driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox. The gearing is intended for converting the linear forward-backward movement of a preferably hand-operated short-stroke lever (14) into a rottational movement of a driving wheel without the dead points characteristic of the conversion of linear movement into rotation by means of an eccentric drive. By pushing a handle (25) on the driving lever (14) downwards, a brake can also be activated by means of an in-built mechanism. Two different speeds in both directions can be achieved by switching a gearbox contained in the gear.

Description: DRIVING GEARING WITH BIDIRECTIONAL DRIVING ACTION OF A TWO-HAND MUSCLE-DRIVEN VEHICLE WITH GEARBOX The invention relates to a driving gearing with bidirectional driving action of a two-hand muscle-driven vehicle with gearbox equipped with a driving lever (which when twisted or pushed athwart makes the gear switch forward or backward, respectively, and is also equipped with a handle acting on a brake), for converting linear movement of the lever into continuous rotation, this driving gearing being built into the driving wheel of a vehicle or into a revolving housing from which the torque is transmitted to the driving wheel by means of chain wheels and a chain, or by some other known means. The driving gearing is intended for the conversion of linear forward/backward movement of a short-stroke lever preferably controlled by hand, into rotational movement of a driving wheel. Instead of a driving lever, the driving gearing may be equipped with a driving ring, wherein the driving action is achieved through alternate pushing or pulling of the driving ring. In the described example the driving ring is fixed by means of carriers to the hub of the driving gearing. By shifting the driving ring axially along the hub of the gearing or the driving wheel, two different gears or a rigid linking of the driving ring with the wheel of a wheelchair is attained. In the case of a driving lever, the direction of rotation of the driving gearing or the driving wheel is defined by twisting the driving lever axially or by pushing it athwart horizontally. Two different gears or free running of the driving wheel are made possible by shifting a transmission handle installed on the basic driving lever. The invention belongs to class B 62 M 1/14 of the International Patent Classification. The technical problem which the gearing in accordance with the invention successfully solves is to design such a wheelchair driving system which would provide active, bidirectional operation of both driving grips at different transmission ratios of the wheel, and the possibility of fast changing of direction of rotation of each driving wheel independently, without the driver removing his or or her hand or individual fingers from the driving grips, which, along with higher driving efficiency, provides an improvement to the maneuvering properties of a two- hand-driven wheelchair with lever drive, as the new gearing in accordance with the invention operates without the sinusoidal losses typical for the conversion of linear movement into rotation by means of eccentric clamping of driving levers. A particular technical problem is to design such a continuous two-hand drive which would ensure, along with a path of movement of individual extremity as short as possible, an active and even driving effect in the entire driving movement, regardless of its direction, and different vehicle speeds with regard to the actual transmission ratio, which together would ensure a certain energy advantage over known gears of this kind. The design solution shall also be simple to manufacture and suitable for subsequent installation on an optional or already existing wheelchair. The driving systems of two-hand-driven wheelchairs are conceived on two known concepts. The first group includes wheelchairs driven by the driver directly pushing two driving rings installed rigidly on the driving wheels. A positive feature of such drives are good maneuvering characteristics, as the driver can turn the chair on the spot rotating one wheel in one direction and the other in the opposite direction. A drawback of such drives is very low driving efficiency, as after having pushed the driving ring, the driver has to let the ring go and bring his or her hand back, which means that during one half of the entire move of his or her hand the driver does not actively perform the driving. Another reason for poor efficiency of said drives lies in an inconvenient bending angle of the driver's arms, which along with a maximum bodily strain develops of only 30 % of the force which could otherwise be developed at an e.g. breast push of higher lifted arms. The second group of known concepts of two-hand-driven wheelchairs includes lever-driven chairs that the driver drives by means of alternate pushing and pulling of elevated driving levers, whereby linear movements are converted into the rotation of the driving wheel over an eccentrically clamped and longitudinally positioned rod assembly. The positive feature of such a drive lies in a slightly higher driving efficiency when driving on a even terrain. The drawbacks, however, lie in extremely scarce maneuvering possibilities, incapability of driving uphill or on an uneven surface, and in a mechanically defined moving length of the driving lever, which is, in a long drive, extremely fatiguing for the driver's musculature. Existing solutions that, in both known types of two-hand driven wheelchairs, partly improve the given drawbacks, such as the introduction of a mechanical transmission gear into a ring drive (Patent DE 42 11 338 A1 , applied for on 4 April 1993), or the handle-lever drives invented as early as previous century for driving saws (Reitze, 1880)), and later inventions of handle drives invented expressly for wheelchairs (DE 31 31 679 A1 , applied for in 1981 ; US Patent 656.923 from 1985; European Patents No. 0318677 A1 and 0 332 813 from 1988, etc.), do not remedy in an integral way the main drawbacks, such as making use of the reverse movement of hands at the ring drive, or an optimal maneuvering characteristic of the wheelchair along with an essentially increased energy advantage and technological- technological suitability of products for industrial production. The invention relates to a driving gearing with gearbox of a two-hand-driven wheelchair with bidirectional action, as presented in embodiments I and II, for use with a lever drive wherein continuous reverse rotation is obtained through a radial twist of the driving lever (embodiment I), or through a side push of the lever (embodiment II). By pressing an anatomically shaped handle downwards, a brake is activated. In accordance with embodiment II, the invention is a driving gearing with gear-box of a wheelchair with bidirectional driving action on a driving ring whose pushing forwards or pulling backwards always results in active rotation of the driving wheel in the direction of driving. By shifting the driving ring axially into one of the three provided positions the driver achieves two different transmission ratios, or a direct link between the driving ring and the wheel of the chair, and thereby also the possibility of the driving wheel's rotation in the reverse direction. All three embodiments of bidirectionally acting driving gears for two-hand drive of a wheelchair presented here are suitable for installation into the driving wheel of a wheelchair or into a revolving housing fixed to the rod assembly of a wheelchair, and with a chain or belt transmission of the torque to the driving wheel. The driving system of the driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with the invention will be explained in detail below with reference to drawings which illustrate the embodiments of three variant solutions, in which Fig. 1 shows a driving gearing for converting linear movement of a lever into rotational movement of a driving system of a muscle-driven vehicle in accordance with embodiment I, in cross-section; Fig. 2 shows a driving gearing for converting linear movement of a lever into rotational movement of a driving system of a muscle-driven vehicle in accordance with embodiment I, in a view from above; Fig. 3 shows a driving gearing for converting linear movement of a lever into rotational movement of a driving system of a muscle-driven vehicle in accordance with embodiment I, in cross-section and a view from above; Fig. 4 shows a driving gearing for converting linear movement of a lever into rotational movement of a driving system of a muscle-driven vehicle in accordance with embodiment I, in a side view; Fig. 5 shows an anatomically shaped projection 25 on a driving/operating lever 14 of a driving gearing of a muscle- driven vehicle in accordance with embodiment I; Fig. 6 shows a driving mechanism of a muscle-driven vehicle with a ring drive in accordance with embodiment II, in cross- section and an A-A view; Fig. 7 shows a driving gearing of a muscle-driven vehicle with a ring drive in accordance with embodiment II, in cross- section and a B-B view. Fig. 8 shows an inner housing of a driving gearing of a muscle-driven vehicle with a ring drive in accordance with embodiment II, in a side view; Fig. 9 shows a driving gearing of a muscle-driven vehicle with ring drive in accordance with embodiment III, in cross- section and a B-B view. Fig. 10 shows an inner housing of a driving gearing of a muscle-driven vehicle with a ring drive in accordance with embodiment III, in a side A-A view; Fig. 1 is a cross-section of a driving gearing for converting linear movement of a lever into rotational movement of the driving system of a muscle-driven vehicle in accordance with embodiment I. Onto the frame of a muscle-driven vehicle a main carrier 1 is mounted by means of a bracket 1a. Between the bracket 1a and the main carrier 1 a toothing can be provided for step-by-step adjustment of the position of the main carrier 1 and thereby the gearing in accordance with the invention. By shifting a driving lever 14, which is clamped in a rotating way onto the main carrier 1 , into one direction (e.g. forward) the driven gear 15 is shifted in one direction, e.g. backward. This shift is made possible by two pairs of small driving gears 18, 18' and 19, 19', which are installed on their axes 8, 8' linked by means of a spacer disk 9 of a pendulum and over an axle 7 linked with the driving lever 14. The small driving gears 18, 18' are installed on an axle 8, 8' over one-way rotation blocade, which means that they can rotate freely in one direction while rotation in the other direction is blocked. The small driving gears 19, 19', which are also positioned on axles 8, 8' lie in engagement with the small driving gears 18, 18' and are not fitted with one-way rotation blocade. The small driving gears 18, 18', 19, 19' are alternatively installed on the axles 8, 8' in such a way that the small driving gears 18 and 19' are placed on the axle 8, while the small driving gears 19 and 18' are placed on the axle 8'. The distance between the axles 8 and 8' is such that the small driving gears 18, 19 and 18', 19', respectively, engage each other. By means of a pin 24 installed on the driving lever 14 it is possible to shift the spacer disk 9 and thereby both pairs of small driving gears 18, 19' and 19, 18' in such a way that once the small driving gear 18 and the driven gear 15' are engaged, and once the small driving gear 18' and the driven gear 15. As a result of the alternative positions of the small driving gears 18, 18', which are equipped with a one-way rotation blocade, the rotation of the driven gear 15 is made possible always in the same direction, regardless of where the driving lever 14 is shifted. This is also made possible by a revolving toothed mechanism composed of two revolving gears 16 and 17. Thus, for example, the driven gear 15 rotates forwards as long as it lies in engagement with the small driving gear 19' (in the same time the driven gear 15' is is also in engagement with the small driving gear 18). When, however, by twisting the driving lever 14 (whereby the pin 24 acts on the spacer disk 9), the small driving gear 18' is shifted into engagement with the driven gear 15 (at the same time the driven gear 15' is in engagement with the small driving gear 19), the driven gear 15 rotates in the opposite direction. The described combination of gears provides a constant rotation of the driven gear 15 into one direction only, regardless of the direction of shift of the driving lever 14. However, by twisting the driving lever 14, rotation of the gear 15 in the opposite direction may be achieved. In this way, by a pair of driving grips 14 equiped with handles 25 and by installing two gearings in accordance with the invention, each in one driving wheel, the forward and backward motion of a wheelchair is achieved along with the maneuvering (one driving wheel forward , and the other backward ) of the vehicle, e.g. a wheelchair. The driving gearing of a muscle-driven vehicle is also equipped with a gearbox. Thus for example, in the first gear the rotation of the driven gear 15 is transmitted over a small turning gear 16 to a gear 20 and over this to an expulsion gear 22 which is directly linked with a ring 23 on the vehicle's wheel. When shifting a gearshift shown schematically in Fig. 4 into the 2nd gear position, the rotation of the driven gear 15 is transmitted over a double gear 21 to the expulsion gear 22. Fig. 5 is a cross-section of an anatomically shaped handle 25 on the driving-operating lever 14 of the driving gearing of a muscle-driven vehicle with gearbox in accordance with the invention. It is installed at the free end of the driving lever 14, and has at the one end a flexible element 26 which passes into a stretching pulley 27 around which e.g. a steel rope 28 is wound leading to an adequately designed brake on the wheel. The form and the installation of the anatomically shaped handle 25 on the driving lever 14 provides simple driving and operating of the muscle-driven vehicle. By pushing or pulling the lever 14 one selects the direction of the vehicle ("forward" - "free running" - "reverse"), while braking is achieved by shifting the handle 25 downwards. The driving gearing with bidirectional driving action of a muscle-driven vehicle with gear-box in accordance with embodiment I solves the given technical problem by providing, through a gearing in accordance with the invention, a continuous drive of the vehicle, which takes advantage both of the motion of the lever in the active forward direction and in the return direction. Besides providing simple control of the driving wheel in terms of "forward running", "free running" and "reverse running", which through installing the gearing in accordance with the invention in both wheels of a wheelchair provides extreme mobility and agility, and in the same time simple control of the wheelchair, the gearing in accordance with the invention with gearbox provides optimal efficiency of the wheelchair, both indoors and outdoors. The anatomically shaped lever 14 and the handle 25 also ensure successful braking of the vehicle, as the functions of bidirectional drive "forwards/backwards", the control of the vehicle and the activation of brakes are all assembled on the driving grips. Fig. 6 is cross-section and an A-A view of the driving gearing of a muscle-driven vehicle with a ring drive in accordance with embodiment II in the position of slow transmission ratio. Onto the main driving axle 29 which is axially and radially borne in the hub 30 of the wheel, a gear pair 31 is planted and rigidly tied with. The inner housing 32 is in a conditionally rigid way tied in the hub 30 and is, at an axial shift of the driving axle 29, and as a result, central position of pin 33, freely rotatable in the hub 30. The bearing between the inner housing 32 and the main driving axle 29 is carried out with an axial/radial bearing 41. A spring/locking mechanism 34 puts, upon axial shift of the main axle 29, the action of the gearing in accordance with the invention in three possible positions, and there are recesses 29a carried out on the main driving axle 29 into which sits the locking part of the spring/locking mechanism 34. Along with the main driving axle 29 and borne on bearings parallelly with it in the inner housing 32 are also two auxiliary driving axles 29', 29" on which lie gear pairs 35, 35' and gears 36, 36', whereby there is also a gear 37 installed on the auxiliary axle 29', while on the outer housing 38 of the driving gearing, an expulsion gear 39 is carried out. The gears 36, 36' are linked in a rigid way on the axles 29', 29', and they lie in engagement, while the gear pairs 35, 35' are in indirect mutual engagement over a gear pair 31. Gear pairs 35, 35 * are installed on axles 29', 29" over one-way rotation gear blocade turned in the opposite direction. The performance of the driving gearing with bidirectional driving action of a muscle-driven mechanism with gearbox in accordance with embodiment II will be explained in detail with reference to Figs. 6, 7 and 8, which illustrate the position of gears with the gearbox in a position for driving uphill. By pushing and pulling the driving ring 40 the main axle 29, and thereby the gear pair 31, are turned. The smaller gear of the gear pair 31 lies in engagement with the the bigger gear of the gear pairs 35, 35'. As the gear pairs 35 and 35' are installed on their axles 29', 29" over one-way rotation blocade acting in the opposite direction, the gear 37 turns, regardless of the gear pair's direction of rotation, always in the same direction. The gear 37 lies in engagement with the expulsion gear 39 which is fixed to the outer housing 38 of the driving gearing. In this way the outer housing 38 of the driving gearing, and together with it the driving wheel, always turns in the same direction, regardless of whether the driving ring 40 is pushed in the driving direction or pulled in the reverse direction. Through an axial shift of the main driving axle 29 of the driving gearing in accordance with the invention outward into another extreme position, and through turning the gear pair 31, the bigger gear of which lies, in this position, in engagement with the smaller gear of the pair 35, 35', the rotation of the gear 37 is achieved again in one and the same direction, but at a transmission ratio suitable for fast driving on an even surface. The transmission ratio between the two extreme positions of the driving axle 29 of the driving gearing is defined by the ratio between the smaller and the bigger gear of the gear pairs 35, 35' in relation to the size of the gears of the gear pair 31. The central position of the main driving axle 29 brings about a rigid link between the gears of the gear pair 31 and the gear pairs 35, 35'. As in this position of the main driving axle 29 the pin 33 of the clutch interrupts the rigid link between the hub 30 and the inner housing 32, the inner housing 32 and the outer housing 38 rotate simultaneously in the actual direction in which the driving rings 40 are turned. With the main driving axle 29 in central position, the driving gearing with gear-box of a wheelchair with ring drive in accordance with the invention provides the same driving effects as a conventional wheelchair, so that indoor maneuvering or turning of the wheelchair around a vertical axis is possible. Outdoors, such turning is not necessary and even not desirable, as a sudden turn while driving at a high speed may roll over the wheelchair. In both extreme positions of the main axle 29 the driver performs the control by strongly turning the left or the right driving ring 40. The shifting of the main driving axle 29 and thereby the driving ring 40 into all three positions can also be carried out by means of a common handle which, over levers or over a known system of coated steel rope and an appropriate spring/return mechanism, axially shifts the main driving axle 29 of the two driving wheels simultaneously. In order to achieve the same effect with a driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with embodiment III, the moving of the gear pair 31 can also be achieved without axially shifting the main driving shaft 20. This is carried out with the main driving axle 29 having axial external toothing, while inside the gear pair 31 an additional central internal toothing is provided. The gearwheel pair can therefore be mechanically shifted along the main driving axle 29. This can be achieved through a lever linked with the gear pair 31 and lying inside the tube-shaped main driving axle 29. Fig. 9 is a cross-section and a B-B view of the driving gearing of a muscle-driven vehicle with gearbox with a ring drive in accordance with embodiment III. It consists of an inner carrier 42 on which the outer housing 44 of the drive is borne through a bearing 43, which can in the same time represent the wheel hub. At the other side the outer housing 44 of the drive is linked with the external hub 45 of the drive in which the main driving axle 47 slides over a sliding sleeve 46, 46'. The end of the main driving axle 47 is fitted with an axially shiftable gear pair 48 of the gearbox which sits, at the other side, over a sliding sleeve 49 onto a projection provided on the inner carrier 42. Through the main driving axle 47 runs a guide 50 of mechanism 51 for switch the transmission ratio. In the inner housing 42 there are, besides the main driving axle 47, and borne parallelly with it, two auxiliary axles 47', 47", on which lie two revolving gears 52, 52' and gear pairs 53, 53' of a blocade, whereby a pre-expulsion gear 54 for reverse drive is also placed on the auxiliary axle 47', while a linking gear 56 for reverse drive is placed on the external hub 45 over a sliding sleeve 55, lying in engagement with the pre-expulsion gear 54. On the axle 47" of the forward blocade there lies also a pre-expulsion gear 57 for forward driving. Expulsion guides 58 are clamped, at the one end, into a pushing plate 59, and they slide along grooves cut into the external hub 45. At the other end the expulsion guides 58 are fixed to the expulsion gear 60. The pushing plate 59 lies in engagement of forks 61 in the outer side of the driving lever 62. The revolving gear 52, 52' are rigidly linked on the axle 47', 47"and lie in engagement, while the gear pairs 53, 53' are in indirect mutual engagement over the gear pair 48. The gear pairs 53', 53" are placed on the axles 47', 47" over one-way rotation bearing blocade turned in the opposite direction. The performance of a hand drive with gear-box and bidirectional driving action according to the invention will be explained with reference to the drawings in Fig. 9 and 10 which illustrate the gears in the position of a small transmission ratio. By pushing and pulling the driving lever 62 the main driving axle 47 is rotated and with it the movable gear pair 48. The smaller gear of the gear pair 48 lies in engagement with the bigger gear of the gear pairs 53 and 53'. As the gear pairs 53 and 53' are installed on their respective axles 47', 47" over one-way blocade acting in the opposite direction, the pre- expulsion gear 54 rotate always in the same direction, regardless to the direction of the rotation of gear pair 48. The pre-pulsion gear 54 lies in engagement with the linking gear 56 and also with the expulsion gear 60. The outher housing 44 and connected driving wheel rotates always in the same direction regardless of whether the driving lever 62 is pushed in the driving direction or pulled in the reverse direction. By shifting the gear 51 a shift of the gear pair 48 is achieved over the guide 50, the bigger gear of the gear pair 48 lying in this position in engagement with the smaller gear of the gear pairs 53, 53'. With this the rotation of the gear 54 again into the same direction is achieved, this time at a faster transmission ratio suitable for fast driving on an even terrain. Transmission ratio between the two extreme positions is defined with the ratio between the smaller and the bigger gear in the gear pair 53, 53' in relation with the size of the gears of the pair 48. The forward-backward direction of movement of the vehicle is defined with different horizontal positions of the driving lever 62. The driving lever 62 is horizontally shiftable in the centre of rotation 63, so that by moving it a shift of the pushing plate 59 is achieved, as the latter lies in engagement with forks 61 of the driving lever 62. A shift of the pushing plate 59 brings about a shift of the expulsion gear 60 out of its position illustrated in Fig. 9, where the expulsion gear 60 lies in engagement with the linking gear 56. Such position means the rotation of the outer housing 44 of the drive into one direction. In the other extreme position the expulsion gear 60 changes into engagement with the pre-expulsion gear 57, which means rotation of the outer housing 44 of the drive into another direction. The design solution of shifting the expulsion gear 60 also provides an intermediate position in which the expulsion gear 60 is not in engagement. In this position the housing 44 of the drive rotates freely on the driving axle 47. By mounting a gripping ring e.g. on a standard wheel ring of the driving wheel of a wheelchair, the wheelchair can, in this position, also be driven by simultaneously pushing and changing hands on the driving ring installed on the wheels.

Claims: CLAIMS 1. Driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with embodiment I, characterized in that by pushing and pulling a driving lever (14) the movement of the driven wheel in one direction is provided, wherein the longitudinally shiftable driving lever (14) is borne over a carrier (5) on a main axle (2) on which also the driven gears (15, 15') are installed, lying in momentary engagements resulting from a shift of the driving lever (14) and thereby the operation of a pin (24) on a spacer plate (19) which is borne in a rotating way on an axle (7) with regard to the desired direction of rotation of an expulsion gear (22); that the driven gearwheels (15, 15') are linked, first with a pair of small driving gears (18, 19') and then with a pair of small driving gears (18', 19), and interlinked also with a revolving gearing composed of a gear (16) and a gear (17); that by pushing an anatomically shaped handle (25) downwards also the vehicle's brake is activated. 2. A driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with embodiment I and as claimed in claim 1, characterized in that placed in engagement on parallelly lying axles (8, 8') lie small driving gears (18, 18', 19, 19'), of which only the small gears lying diametrically opposite each other are fitted with a brake which acts on the gear fitted with it in one direction, and on the gear lying in engagement with it in the opposite direction. 3. A driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with embodiment I and as claimed in claims 1 and 2, characterized in that the driven gear (15) lies, with the gearshift in one position, in engagement with the revolving gear (16) and over gear (20) with the expulsion gear (22), while the driven gear (15) lies, with the gearshift in another position, in engagement with the double gear (21) and the expulsion gear (22), whereby the expulsion gear (22) is linked with the ring (23) of the wheel. 4. A driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with embodiment I and as claimed in claims 1 through 3, characterized in that an anatomically shaped handle (25) vertically movable with regard to the longitudinal flexibility of the driving lever (14) is installed on the free end of the driving lever (14), fitted at one end with a flexible element (26) which passes into a stretching pulley (27) around which e.g. a steel rope (28) is wound leading to an adequately provided brake on the wheel. 5. A driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with embodiment II, characterized in that a driving ring (40) movable in both directions is linked with a centrally installed movable main driving axle (29) of a driving gearing which is borne in a hub (30) of the wheel in such a way as to ensure the flexibility of a gear pair (31), whereby the driving wheel rotates in the same direction. 6. A driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox as per embodiment II and as claimed in claim 5, characterized in that a main driving axle (29) is installed and axially movable in steps. 7. A driving gearing with bidirectional action of a muscle- driven vehicle with gearbox in accordance with embodiment II and as claimed in claim 5, characterized in that a gear pair (31) is axially movable. 8. A driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with embodiment II and as claimed in claims 5 through 7, characterized in that gears (36, 36') are rigidly fixed to axles (29', 29") and lying in engagement, and that two one-way rotation blocade acting in the opposite direction are placed on the same axles, on which lie two gear pairs (35, 35') which are not directly in engagement, but are in engagement with the gear pair (31). 9. A driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with embodiment II, characterized in that a transversely flexible driving lever (62) is fixed to a main driving axle (47), on which a radially rigid and axially movable gear pair (48) of a gearbox is installed, while forks (61) of the driving lever (62) lie in engagement with a pushing plate (59) which is linked with an expulsion gear (60) over axial guides (58). 10. A driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with embodiment III and as claimed in claim 9, characterized in that longitudinal forward-backward motion of the driving lever (62) results in alternate rotation of the gear pair (48), while the outer housing (44) of the drive rotates always in the same direction at a speed which depends on the axial position of the gear pair (48) with regard to its engagement with the gear pair (53, 53'). 11. A driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with embodiment III and as claimed in claim 9, characterized in that a transverse shift of the driving lever (62) in the centre of rotation (63) in the horizontal direction causes, over forks (61), a shift of the pushing plate (59) and thereby also an axial shift of the expulsion gear (60), on the extreme positions of which depends its engagement with a linking gear (56) for reverse drive, or with a pre-expulsion gear (57) for forward drive, whereas the intermediate position of the expulsion gear (60) allows free rotation of the outer housing (44) of the drive. 12. A driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with embodiment III and as claimed in claims 9 through 11 , characterized in that gears (52, 52') are fixed in a rigid way to axles (47', 47") lying in a gearing engagement, and that two one-way rotation blocade acting in the opposite direction are installed place on the same axles, on which blocade lie gear pairs (53, 53') which are not in direct engagement but in engagement with the gear pair (48). 13. A driving gearing with bidirectional driving action of a muscle-driven vehicle with gearbox in accordance with embodiment III, characterized in that the transmission ratio at reverse rotation of the drive's outer housing (44) is always lower than the transmission ratio at forward rotation of the drive's outer housing (44).

Inventors: MARKOVIC VLADIMIR, MARKOVIC, VLADIMIR
Applicants: MARKOVIC VLADIMIR, MARKOVIC, VLADIMIR
Application year: 1994
Main classification: A61G5
IPC codes: A61G5, B62M1, B62M11, F16H3, F16H31